Microsoft ASP .NET SignalR up to 2.0.0 cross site scripting

CVSS Meta Temp Score
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CTI Interest Score
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6.0$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Microsoft ASP .NET SignalR 1.1.0/1.1.1/1.1.2/1.1.3/2.0.0. Impacted is an unknown function. This manipulation causes cross site scripting. This vulnerability is tracked as CVE-2013-5042. The attack is possible to be carried out remotely. No exploit exists. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability classified as critical was found in Microsoft ASP .NET SignalR 1.1.0/1.1.1/1.1.2/1.1.3/2.0.0. Affected by this vulnerability is an unknown functionality. The manipulation with an unknown input leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Cross-site scripting (XSS) vulnerability in Microsoft ASP.NET SignalR 1.1.x before 1.1.4 and 2.0.x before 2.0.1, and Visual Studio Team Foundation Server 2013, allows remote attackers to inject arbitrary web script or HTML via crafted Forever Frame transport protocol data, aka "SignalR XSS Vulnerability."

The weakness was disclosed 12/10/2013 with Microsoft as MS13-103 as confirmed bulletin (Technet). It is possible to read the advisory at technet.microsoft.com. The public release has been coordinated in cooperation with Microsoft. This vulnerability is known as CVE-2013-5042 since 08/06/2013. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 71318 (MS13-103: Vulnerability in ASP.NET SignalR Could Allow Elevation of Privilege (2905244)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows : Microsoft Bulletins. The commercial vulnerability scanner Qualys is able to test this issue with plugin 121628 (ASP.NET SignalR Elevation of Privilege Vulnerability (MS13-103)).

Applying the patch KB2903919 is able to eliminate this problem. The bugfix is ready for download at technet.microsoft.com. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (89258), Tenable (71318), SecurityFocus (BID 64093†), OSVDB (100770†) and Vulnerability Center (SBV-42519†). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Affected

  • ASP .NET SignalR 1.1.0/1.1.1/1.1.2/1.1.3/2.0.0
  • Visual Studio Team Foundation Server 2013

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

Class: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 71318
Nessus Name: MS13-103: Vulnerability in ASP.NET SignalR Could Allow Elevation of Privilege (2905244)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 903416
OpenVAS Name: Microsoft VS Team Foundation Server SignalR XSS Vulnerability (2905244)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Patch: KB2903919

Timelineinfo

08/06/2013 🔍
12/10/2013 +126 days 🔍
12/10/2013 +0 days 🔍
12/10/2013 +0 days 🔍
12/10/2013 +0 days 🔍
12/10/2013 +0 days 🔍
12/11/2013 +1 days 🔍
12/11/2013 +0 days 🔍
12/12/2013 +1 days 🔍
12/25/2024 +4031 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: MS13-103
Organization: Microsoft
Status: Confirmed
Coordinated: 🔍

CVE: CVE-2013-5042 (🔍)
GCVE (CVE): GCVE-0-2013-5042
GCVE (VulDB): GCVE-100-11467

OVAL: 🔍
IAVM: 🔍

X-Force: 89258
SecurityFocus: 64093 - Microsoft ASP.NET SignalR CVE-2013-5042 Cross Site Scripting Vulnerability
OSVDB: 100770
SecurityTracker: 1029463
Vulnerability Center: 42519 - [MS13-103] Microsoft ASP.NET SignalR and Visual Studio Team Foundation Server XSS Vulnerability - CVE-2013-5042, Medium

Entryinfo

Created: 12/12/2013 11:15
Updated: 12/25/2024 02:24
Changes: 12/12/2013 11:15 (72), 04/05/2017 16:08 (9), 06/04/2021 09:06 (2), 06/04/2021 09:10 (1), 12/25/2024 02:24 (16)
Complete: 🔍
Committer: olku
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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